#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
using namespace std;

int main()
{
    int len, n;
    cin >> len >> n;

    vector<int> w(n);
    for(int i=0; i<n; ++i)
        cin >> w[i];
    sort(w.begin(), w.end());

    int i = 0;
    while(i < n && len - w[i] >= 0){
        len -= w[i];
        ++ i;
    }
    cout << i << endl;

    return 0;
}